PTFE Seated Carbon Steel Flange Type Motorized Butterfly Valve
PTFE Seated Carbon Steel Flange Type Motorized Butterfly Valve
- Valve Size: DN50~DN500
- Body Material: Epoxy coated cast, Ductile iron, SS304/SS316 ,WCB, Aluminum alloy
- Disc Material: SS304/SS316,WCB, Aluminum Bronze, Nylon, Ductile iron
- SealMaterial: EPDM, PTFE, NBR, VITON
- Work Temperature: -25~150 Degree
- Flanged Connection: ISO 5211 or DIN 3337 Standard
- Pressure Rating: PN10/PN16 ANSI150, DIN16, JIS 10K/16K
- Medium: Air, water, steam, oil.etc
- Actuator Model: HEA Series On-off Quarter-Turn Electric Actuator
- Control: On-off or Proportional Control
- Protection Class: Weatherproof – lP67
Hearken Electric Flanged Butterfly Valve featuring a Soft Seal Structure, designed for economical and highly efficient flow control (on/off or proportional) in low to medium-pressure applications involving water, general liquids, and corrosive gases.
The Soft Seal Butterfly Valve is a versatile and cost-effective solution for pipeline isolation and throttling. The design employs a resilient seat—available in EPDM, PTFE, NBR, or VITON—to achieve bubble-tight, bidirectional sealing. Its body is constructed from durable, varied materials including Ductile Iron (Epoxy coated), SS304/SS316, and WCB, ensuring compatibility with a wide array of media. Operating within a practical temperature range of -25°C to 150°C, it is driven by a weatherproof IP67 Electric Actuator for both simple open/close and modulating control.
Features & Benefits
Superior Bidirectional Sealing: The Soft Seal (EPDM, PTFE, NBR, VITON) structure guarantees a bubble-tight seal in both flow directions, a critical advantage for clean and general service applications.
Corrosion and Chemical Versatility: The availability of multiple high-performance soft-seal elastomers (EPDM for water/steam, VITON for chemicals/high-heat, NBR for oil/gas, and PTFE for aggressive media) ensures optimal chemical compatibility.
Economic Design: The centerline configuration simplifies manufacturing and maintenance, offering a high-performance valve at a lower cost compared to eccentric designs.
Durable Construction: Body material options like epoxy-coated Ductile Iron provide excellent resistance to external corrosion, while Stainless Steel options suit internal corrosive media.
Weatherproof Automation: The valve comes with an IP67 Electric Actuator, ready for reliable, precise control in outdoor or damp industrial environments.
| DN | IN | Dimension(Unit:mm) | Connection Size | Actuator Model | |||||||
| L | H | H1 | L1 | L2 | H2 | D | D1 | N-D | |||
| 50 | 2″ | 108 | 200 | 80 | 160/190 | 146/143 | 121/161 | 165 | 125 | 4-18 | HEA005/HEX005 |
| 65 | 2 1/2″ | 112 | 219 | 89 | 160/190 | 146/143 | 121/161 | 185 | 145 | 8-18 | HEA005/HEX005 |
| 80 | 3″ | 114 | 240 | 95 | 160/217 | 146/195 | 121/161 | 200 | 160 | 8-18 | HEA008/HEX010 |
| 100 | 4″ | 127 | 270 | 114 | 160/217 | 146/195 | 121/161 | 220 | 180 | 8-18 | HEA008/HEX010 |
| 125 | 5″ | 140 | 295 | 125 | 188/217 | 151/195 | 132.5/161 | 250 | 210 | 8-18 | HEA015/HEX015 |
| 150 | 6″ | 140 | 330 | 142 | 204.5/261 | 191/219 | 154/185 | 285 | 240 | 8-22 | HEA020/HEX020 |
| 200 | 8″ | 152 | 375 | 170 | 204.5/261 | 191/219 | 154/185 | 340 | 295 | 8-22/12-22 | HEA040/HEX040 |
| 250 | 10″ | 165 | 433 | 198 | 204.5/261 | 191/219 | 154/185 | 395/405 | 350 | 12-22/12-26 | HEA060/HEX060 |
| 300 | 12″ | 178 | 503 | 223 | 267/310 | 206/240 | 167/175 | 445/460 | 400/410 | 12-22/12-26 | HEA080/HEX100 |
| 350 | 14″ | 190 | 590 | 260 | 267/310 | 206/240 | 167/175 | 505/520 | 460/470 | 16-22/16-26 | HEA100/HEX100 |
| 400 | 16″ | 216 | 660 | 290 | 267/310 | 206/240 | 167/175 | 565/580 | 515/525 | 16-26/16-30 | HEA200/HEX200 |
| 450 | 18″ | 222 | 720 | 320 | 267/310 | 206/240 | 167/175 | 615/640 | 565/585 | 20-16/20-30 | HEA200/HEX200 |
| 500 | 20″ | 229 | 900 | 400 | 424 | 346 | 291 | 670/715 | 620/650 | 20-26/20-33 | HQ300 |
| 600 | 24″ | 267 | 1027 | 457 | 424 | 346 | 291 | 780/840 | 725/770 | 20-30/20-36 | HQ300 |
Applications
Water & Wastewater Treatment: Potable water, raw water, sewage systems, and filtration plants (especially with EPDM seals).
HVAC Systems: Chilled water, hot water, and general fluid handling in building services.
General Industry: Liquids and gases, low-pressure steam, and non-critical industrial pipelines.
Chemical/Petrochemical: Handling certain corrosive liquids and gases (requiring PTFE or VITON seals).
Fire Protection: General service and isolation in fire main systems.
